CN103605036A - Test platform for hydrogen frequency scalar subsystem - Google Patents
Test platform for hydrogen frequency scalar subsystem Download PDFInfo
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- CN103605036A CN103605036A CN201310646739.5A CN201310646739A CN103605036A CN 103605036 A CN103605036 A CN 103605036A CN 201310646739 A CN201310646739 A CN 201310646739A CN 103605036 A CN103605036 A CN 103605036A
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 93
- 239000001257 hydrogen Substances 0.000 title claims abstract description 93
- 238000012360 testing method Methods 0.000 title claims abstract description 51
- 230000003287 optical effect Effects 0.000 claims abstract description 36
- 238000012545 processing Methods 0.000 claims abstract description 32
- 230000005855 radiation Effects 0.000 claims abstract description 26
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 15
- 230000007704 transition Effects 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 9
- 230000010355 oscillation Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 6
- 239000000523 sample Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010943 off-gassing Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000005247 gettering Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention relates to a test platform for a hydrogen frequency scalar subsystem. The test platform comprises a vacuum chamber used for enabling a radiation assembly of the subsystem to be measured to be fixed, a first vacuum gauge communicated with the vacuum chamber, at least one vacuum data interface used for outputting radiation signals to be measured and formed in the vacuum chamber, an atomic beam optical system used for supplying atomic beams to the vacuum chamber, a second vacuum gauge communicated with the atomic beam optical system, at least one vacuum pump set used for vacuumizing the vacuum chamber and the atomic beam optical system and a data processing unit used for processing data of the vacuum chamber, the atomic beam optical system, the first vacuum gauge and the second vacuum gauge. The test platform for the hydrogen frequency scalar subsystem has the advantages that multiple parameters of an active hydrogen frequency scalar and a passive hydrogen frequency scalar can be measured, the measuring period is short, the accuracy is high, and a more convenient and more rapid measuring method is offered to the improvement in hydrogen frequency scalar performance.
Description
Technical field
The present invention relates to a kind of measurement mechanism, particularly a kind of test platform for hydrogen frequency marking quantized system.
Background technology
Hydrogen frequency marking has high frequency stability index, in fields such as satellite navigation, time synchronized, punctual time service and communications, is widely used.Hydrogen frequency marking is divided into active hydrogen frequency marking and passive-type hydrogen frequency marking, and the principle of work of these two kinds of hydrogen frequency markings is different.Active hydrogen frequency marking can be initiatively the oscillator signal that gives off hydrogen atom, and the passive-type hydrogen frequency marking transition signal of radiation hydrogen atom under the excitation of microwave signal externally.The index of active hydrogen frequency marking is a little more than passive-type hydrogen frequency marking, but all will be higher than passive-type hydrogen frequency marking in volume, weight and price.
Active hydrogen frequency marking and passive-type hydrogen frequency marking are all comprised of quantized system and Circuits System.Quantized system is the core component of hydrogen frequency marking, and the Stability index of hydrogen frequency marking is played to the performance effect that determines.Hydrogen frequency marking quantized system mainly comprises the components and parts such as microwave cavity, magnetic shielding system, storage bubble, state selection magnet, ionization bubble and ionization bubble collimating apparatus.The leading indicator of active hydrogen frequency marking quantized system is radiation signal amplitude, the transition signal amplitude that the leading indicator of passive-type hydrogen frequency marking quantized system is hydrogen atom.For making quantized system be operated in steady state (SS), need to measure the various running parameters of quantized system.
Therefore need a kind of radiance that both be applicable to measure the quantized system of active hydrogen frequency marking and passive-type hydrogen frequency marking, be applicable to again test each parts performance of hydrogen frequency marking quantized system, the test macro of the hydrogen frequency marking quantized system of convenient operation.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of test platform for hydrogen frequency marking quantized system, to solve the problem of hydrogen frequency marking quantized system performance parameter Quick Measurement.
For addressing the above problem, the invention provides a kind of test platform for hydrogen frequency marking quantized system, this test platform comprises
Vacuum chamber for fixing measured subsystem radiation assembly;
The first vacuum meter with vacuum chamber;
On vacuum chamber, at least one is for exporting the vacuum data-interface of radiation signal to be measured;
For the atomic beam optical system of atomic beam is provided to vacuum chamber;
The second vacuum meter being communicated with atomic beam optical system;
At least one is for by vacuum chamber and the evacuated vacuum pump group of atomic beam optical system;
Be used for the data processing unit of processing from the data of described vacuum chamber, atomic beam optical system and the first and second vacuum meters.
Preferably, this test platform further comprises that for by the pipeline of atomic beam optical system and vacuum chamber, this pipeline has the interface for measured subsystem radiation assembly in termination vacuum chamber.
Preferably, described pipeline is length-adjustable.
Preferably, this test platform comprises the first vacuum pump group and the second vacuum pump group, and described the first vacuum pump group is for state that vacuum chamber is evacuated, and described the second vacuum pump group is for state that atomic beam optical system is evacuated.
Preferably, this test platform also comprises and is connected to the first valve between described the first vacuum pump group and described vacuum chamber and is connected to the second valve between described the second vacuum pump group and described atomic beam optical system.
Preferably, described atomic beam optical system comprises hydrogen atom source, collimating apparatus and state selection device.
Preferably, described vacuum chamber comprises for the first vacuum data-interface of outputting oscillation signal with for exporting the second vacuum data-interface of transition signal.
Preferably, described vacuum chamber comprises a vacuum data-interface and for the measurement mechanism of measuring radiation signal.
Preferably, described data processing unit comprises data processing module, frequency spectrograph and network analyzer.
According to test platform of the present invention, both can measure active hydrogen frequency marking quantized system and also can measure passive-type hydrogen frequency marking quantized system.This test platform is by comprising vacuum chamber, radiation amplitude proving installation and atomic beam optical system, make to comprise that in quantized system radiation assembly being carried out to performance test before each atomic beam optics of radiation assembly and its of microwave cavity, magnetic shielding system and storage bubble is assembled becomes possibility, can improve quality and the efficiency of hydrogen frequency marking overall package thus.According to test platform of the present invention, can measure accurately rapidly the multinomial performance parameter of hydrogen frequency marking quantized system, and can realize selection and the location positioning of state selection magnet and ionization bubble collimating apparatus, the advantage such as have that measuring period is short, measurement result is accurate and measurement performance is comprehensive simultaneously.
Accompanying drawing explanation
Fig. 1 is shown a kind of test platform schematic diagram for hydrogen frequency marking quantized system.
1, the first vacuum pump group, the 2, second vacuum pump group, 3, vacuum chamber, 4, atomic beam optical system, 5, data processing unit, the 6, first valve, the 7, second valve, the 8, first vacuum meter, 9, the second vacuum meter, 10, pipeline, 11, vacuum data-interface, 12, hydrogen source assembly, 13, ionization assembly, 14, store bubble, 15, microwave cavity, 16, magnetic shielding system, 17, state selection magnet, 18, collimating apparatus, 19, network analyzer, 20, data processing module, 21, frequency spectrograph, 22, ionization bubble.
Embodiment
With reference to the accompanying drawings the present invention is described further below.
Fig. 1 illustrates a kind of test platform for hydrogen frequency marking quantized system, this test platform comprises the first vacuum pump group 1, the second vacuum pump group 2, for placing the vacuum chamber 3 of measured subsystem radiation assembly, for the atomic beam optical system 4 of atomic beam, data processing unit 5, the first valve 6, the second valve 7, the first vacuum meter 8, the second vacuum meter 9 for to processing from the data of vacuum chamber and beam optics system are provided to vacuum chamber 3, be communicated with pipeline 10 and at least one vacuum data-interface 11 of vacuum chamber and beam optics system.Described data processing unit comprises data processing module, frequency spectrograph and network analyzer.Described the first vacuum pump group 1 is connected with vacuum chamber 3 by the first valve 6, and the first vacuum meter 8 is communicated with vacuum chamber 3, and the second vacuum pump group 2 is connected with atomic beam optical system 4 by the second valve 7.One end of pipeline 10 is communicated with atomic beam optical system 4, and the other end is to be positioned at vacuum chamber can seal with the storage bubble of measured subsystem the interface of termination.When sealing termination is steeped in pipeline 10 and storage, vacuum chamber 3 forms alone the first vacuum system, and storage bubble passes through pipeline 10 and is communicated with formation the second vacuum system with beam optics system 4.The second vacuum meter 9 is communicated with atomic beam optical system 4.Preferably, vacuum chamber 3 can comprise for the measurement mechanism of the radiation amplitude of measuring amount subsystem probe and for exporting a vacuum data-interface of the measured signal of probe for example.By the measurement mechanism of the radiation signal that can measure respectively active quantized system and passive-type quantized system is set, so that both having can be used for testing active hydrogen frequency marking, this test platform also can be used for testing passive-type frequency marking.Or the vacuum data-interface 11 of vacuum chamber 3 can be two data-interfaces.A data-interface can be the first vacuum data-interface for outputting oscillation signal, so that test platform can be used for testing active hydrogen frequency marking quantized system.Another data-interface can be for exporting the second vacuum data-interface of transition signal, so that test platform can be used for testing passive-type hydrogen frequency marking quantized system.
The atomic beam optical system 4 of test platform provides atomic beam for the subsystem radiation assembly to be measured in vacuum chamber.This atomic beam optical system comprises hydrogen atom source, collimating apparatus 18 and state selection magnet 17.Hydrogen atom source for example comprises hydrogen source assembly 12, ionization assembly 13 and ionization bubble 22.State selection magnet 17 is fixed on adjustable pipeline 10 inside in the mode being for example spirally connected.Ionization bubble 22 is fixed on atomic beam optical system 4 centers by the mode being for example spirally connected.Collimating apparatus 18 can be between state selection magnet and ionization assembly 13.The entrance of the storage bubble of outlet, described collimating apparatus 18 center, state selection magnet 17 center and the quantized system of ionization bubble 22 point-blank.The hydrogen molecule that hydrogen source assembly 12 provides for atomic beam optical system 4, described hydrogen molecule becomes the hydrogen atom with high level and low-lying level through ionization assembly 13, there is the hydrogen atom of high and low energy level under the effect of ionization bubble collimating apparatus 18, after being steeped by ionization, described hydrogen atom penetrates by required angle, the For Hydrogen Beam penetrating through ionization bubble carries out state selection by state selection magnet 17, and the hydrogen atom of high level is injected in the storage bubble 14 of hydrogen frequency marking quantized system.
Test platform of the present invention can be used for measuring the radiation characteristic of active hydrogen frequency marking.When measuring the signal amplitude of radiation oscillator signal of active hydrogen frequency marking quantized system, the measured signal of the 21 pairs of active hydrogen frequency marking quantum signals of frequency spectrograph by data processing unit 5 is measured.For example, the oscillation frequency of the microwave cavity of subsystem to be measured 15 is modulated to for example 1.42GHz of required frequency, its magnetic shielding system 16 is demagnetized after processing, the assembly that hydrogen frequency marking quantized system is comprised to microwave cavity 15 and magnetic shielding system 16 and storage bubble, by being fixed in vacuum chamber 3 without magnetic screw, is opened the first vacuum pump group 1 and the first valve 6.Utilize data probe to gather the radiation signal data of the measured subsystem in vacuum chamber 3, by vacuum data-interface 11, data are exported, and be transferred to data processing unit 5.Frequency spectrograph 21 in data processing unit 5 can be processed the radiation signal range value that obtains active hydrogen frequency marking quantized system to data analysis.
Test platform of the present invention can be used for measuring the radiation characteristic of passive-type hydrogen frequency marking.When measuring the transition signal amplitude of passive-type hydrogen frequency marking quantized system, utilize the transition signal amplitude of the 19 pairs of passive-type hydrogen frequency markings of network analyzer in data processing unit 5 to measure.For example, the oscillation frequency of passive-type hydrogen frequency marking microwave cavity 15 is modulated to required frequency as 1.42GHz, its magnetic shielding system 16 is demagnetized after processing, and the assembly that hydrogen frequency marking quantized system is comprised to microwave cavity 15 and magnetic shielding system 16 and storage bubble is by being fixed in vacuum chamber 3 without magnetic screw.Open the first vacuum pump group 1 and the first valve 6, vacuum chamber 3 utilizes data probe to gather the transition signal data of unit under test, by vacuum data-interface 11, data are exported, and be transferred to data processing unit 5,20 pairs of data of network analyzer in data processing unit 5 are carried out analyzing and processing, obtain the transition signal range value of passive-type hydrogen frequency marking.
Test platform of the present invention can be used for measuring outgassing rate and the discharge quantity of hydrogen frequency marking quantized system.Measuring table of the present invention is when measuring the outgassing rate of each parts of hydrogen frequency marking quantized system and discharge quantity, hydrogen frequency marking quantized system is comprised to the assembly of microwave cavity 15 and magnetic shielding system 16 is used without magnetic screw to be fixed in vacuum chamber 3, open the first vacuum pump group 1 and the first valve 6, when the registration of the first vacuum meter 8 is less than 10-5Pa, close the first valve 6.Now, the data processing module 20 in data processing unit 5 according to the vacuum values from the first vacuum meter 8 over time, utilizes formula to calculate outgassing rate and the discharge quantity of each parts of hydrogen frequency marking quantized system.
Test platform of the present invention can be used for selection and the location of optics of the optical system of hydrogen frequency marking quantized system.When test platform is used for selecting and locate for example state selection magnet of hydrogen frequency marking quantized system and/or the atomic beam optics of ionization bubble collimating apparatus, with the respective optical parts in the beam optics system of optics replacement test platform to be selected, the measured signal of choosing network analyzer 19 in data processing unit 5 or 20 pairs of vacuum chambers outputs of frequency spectrograph according to the type of hydrogen frequency marking to be measured carries out signal amplitude measurement.According to the signal amplitude measuring, determine the optics of selecting and determine corresponding assembling position.Particularly, the oscillation frequency of the microwave cavity 15 of hydrogen frequency marking quantized system is modulated to required frequency, and to the processing of demagnetizing of the magnetic shielding system 16 of hydrogen frequency marking quantized system, by the assembly that comprises microwave cavity 15 and magnetic shielding system 16 and store bubble by being fixed in vacuum chamber 3 without magnetic screw.The state selection magnet 17 of hydrogen frequency marking quantized system to be tested is fixed on to adjustable pipeline 10 inside in the mode being spirally connected.The ionization bubble 22 of hydrogen frequency marking quantized system is fixed on to atomic beam optical system 4 centers by the mode being spirally connected, the ionization bubble collimating apparatus 18 of fixed amount subsystem, keeps storing bubble 14, state selection magnet 17, ionization bubble 22 and ionization bubble collimating apparatus 18 simultaneously and is on same straight line.Open the first vacuum pump group 1, the first valve 6, the second vacuum pump group 2 and the second valve 7, open hydrogen source assembly 12 and ionization assembly 13 simultaneously, the hydrogen molecule that hydrogen source assembly 12 provides for atomic beam optical system 4, hydrogen molecule becomes the hydrogen atom with high level and low-lying level through ionization assembly 13, there is height, the hydrogen atom of low-lying level is under the effect of ionization bubble collimating apparatus 18, after being steeped by ionization, described hydrogen atom penetrates by required angle, the For Hydrogen Beam penetrating through ionization bubble carries out state selection by state selection magnet 17, and the hydrogen atom of high level is injected in the storage bubble 14 of hydrogen frequency marking quantized system.When described the first vacuum system and described the second vacuum system reach respectively the vacuum tightness needing, close respectively the first valve 6 and the second valve 7.Utilize adjustable pipeline 10 adjust state selection magnet 17 and store bubble and ionize the distance between bubble collimating apparatus 18, so that the radiation signal range value of hydrogen frequency marking quantized system or transition signal range value have maximal value.When the radiation signal range value of hydrogen frequency marking quantized system or transition signal range value have maximal value, stop the adjusting to adjustable pipeline 10, now, the position of state selection magnet 17 is the state selection distance of hydrogen frequency marking quantized system optimum, and ionization bubble collimating apparatus 18 makes For Hydrogen Beam reach optimum shooting angle.Thus, can fast selecting suitable state selection magnet 17 and ionization bubble collimating apparatus 18, and can adjust rapidly and the optimal location of each atomic beam optics of definite quantized system.
Test platform of the present invention can be used for measuring the serviceable life of hydrogen frequency marking getter material.When use test platform measuring hydrogen frequency marking getter material is during the life-span, the oscillation frequency of the microwave cavity of hydrogen frequency marking 15 is modulated to required frequency, and to magnetic shielding system 16 processing of demagnetizing, by microwave cavity 15 and magnetic shielding system 16 by being fixed in vacuum chamber 3 without magnetic screw.Getter material to be measured is placed in to atomic beam optical system 4, the first vacuum pump group 1 and the first valve 6 are opened, the second vacuum pump 2 and the second valve 7 are opened, according to the activation of getter material, require the activation of having heated getter material.When described the first vacuum system and described the second vacuum system reach required vacuum tightness respectively, close respectively the first valve 6 and the second valve 7.By provide the hydrogen source assembly 12 of hydrogen source to open for atomic beam optical system 4, to the second vacuum system bleed air operation.Subsequently, the data processing module 20 in data processing unit 5 gathers the variable quantity of the second vacuum meter 9, when vacuum tightness is reduced to setting value, automatically stops measuring.Utilize the vacuum tightness data of measuring to calculate gettering rate and the getter capacity of getter, then by logical hydrogen amount, calculate the life-span of getter material.
In sum, test platform of the present invention can be measured active and multiple parameters passive-type hydrogen frequency marking, has that measuring period is short, precision is a little high, for improving hydrogen frequency marking performance, provides more convenient, measuring method more efficiently.
Above content is in conjunction with concrete preferred implementation is made for the present invention explanation to be described in further detail, and can not assert that specific embodiment of the invention is confined to these explanations.For the those of ordinary skill of technical field of the present invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. for a test platform for hydrogen frequency marking quantized system, it is characterized in that: this test platform comprises
Vacuum chamber for fixing measured subsystem radiation assembly;
The first vacuum meter with vacuum chamber;
On vacuum chamber, at least one is for exporting the vacuum data-interface of radiation signal to be measured;
For the atomic beam optical system of atomic beam is provided to vacuum chamber;
The second vacuum meter being communicated with atomic beam optical system;
At least one is for by vacuum chamber and the evacuated vacuum pump group of atomic beam optical system;
Be used for the data processing unit of processing from the data of described vacuum chamber, atomic beam optical system and the first and second vacuum meters.
2. a kind of test platform for hydrogen frequency marking quantized system according to claim 1, it is characterized in that: this test platform further comprises that for by the pipeline of atomic beam optical system and vacuum chamber, this pipeline has the interface for measured subsystem radiation assembly in termination vacuum chamber.
3. a kind of test platform for hydrogen frequency marking quantized system according to claim 2, is characterized in that: described pipeline is length-adjustable.
4. a kind of test platform for hydrogen frequency marking quantized system according to claim 1, it is characterized in that: this test platform comprises the first vacuum pump group and the second vacuum pump group, described the first vacuum pump group is for state that vacuum chamber is evacuated, and described the second vacuum pump group is for state that atomic beam optical system is evacuated.
5. a kind of test platform for hydrogen frequency marking quantized system according to claim 4, is characterized in that: this test platform also comprises and is connected to the first valve between described the first vacuum pump group and described vacuum chamber and is connected to the second valve between described the second vacuum pump group and described atomic beam optical system.
6. a kind of test platform for hydrogen frequency marking quantized system according to claim 1, is characterized in that: described atomic beam optical system comprises hydrogen atom source collimating apparatus and state selection device.
7. a kind of test platform for hydrogen frequency marking quantized system according to claim 1, is characterized in that: described vacuum chamber comprises for the first vacuum data-interface of outputting oscillation signal with for exporting the second vacuum data-interface of transition signal.
8. a kind of test platform for hydrogen frequency marking quantized system according to claim 1, is characterized in that: described vacuum chamber comprises a vacuum data-interface and for the measurement mechanism of measuring radiation signal.
9. a kind of test platform for hydrogen frequency marking quantized system according to claim 1, is characterized in that: described data processing unit comprises data processing module, frequency spectrograph and network analyzer.
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| CN201310646739.5A CN103605036B (en) | 2013-12-04 | 2013-12-04 | A kind of test platform for hydrogen frequency marking quantized system |
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| CN201310646739.5A CN103605036B (en) | 2013-12-04 | 2013-12-04 | A kind of test platform for hydrogen frequency marking quantized system |
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| CN103605036A true CN103605036A (en) | 2014-02-26 |
| CN103605036B CN103605036B (en) | 2016-04-13 |
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-
2013
- 2013-12-04 CN CN201310646739.5A patent/CN103605036B/en not_active Expired - Fee Related
Patent Citations (7)
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|---|---|---|---|---|
| US4123727A (en) * | 1978-01-19 | 1978-10-31 | Peters Harry E | Atomic standard with reduced size and weight |
| CN201569869U (en) * | 2009-10-30 | 2010-09-01 | 中国科学院上海天文台 | Vacuum device of active hydrogen atom clock |
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| 张继红等: "新型氢频标真空组件设计", 《2009时间频率学术会议》 * |
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